Determination of catch composition and Catch per Unit of Area (CPUA) of Penaeid shrimps from the shrimp trawls of Bushehr coastal waters

Although there is no much information about shrimp industrial trawler, the aim of this study was to estimate the catch composition and Catch per Unit of Area (CPUA) of Penaeid shrimps from the bottom trawls of Bushehr coastal waters. Sampling was carried out by stratified sampling producer in the three strata: <10 m, 10-20 m and 20-30 m. The catch composition included: 95.93% Green tiger shrimp (Penaeus semisulcatus), 3.17% Jinga shrimp (Metapenaeus affinis), 0.37% Peregrine shrimp (Metapenaeus stebbingi), 0.37% Kiddi shrimp (Parapenaeopsis stylifera) and 0.18% Fiddler shrimp (Metapenaeopsis stridulans) during the 44 haul. The overall CPUA index for shrimp was 98.51±153.22 g/km2 in Bushehr coastal waters. Green tiger shrimp (P. semisulcatus) with 94.5±151.9 g/km2 was the dominated species and its distribution was significantly different between the north and south fishing grounds (P<0.05). One-way ANOVA test showed a significant difference between the CPUA index of different shrimp species (P<0.05). Also, the CPUA index was computed for each species from all the strata and the Two-way ANOVA test indicated no interaction between the depths and the shrimp species (P>0.05).